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| Content Provider | frontiers |
|---|---|
| Author | Mrisho, Latifa M. Mbilinyi, Neema A. Ndalahwa, Mathias Ramcharan, Amanda M. Kehs, Annalyse K. McCloskey, Peter C. Murithi, Harun Hughes, David P. Legg, James P. |
| Abstract | Nuru is a deep learning object detection model for diagnosis plant diseases and pests, developed as a public good by PlantVillage (Penn State University), IITA, FAO, CIMMYT and others. It provides a simple, inexpensive and robust means of conducting in-field diagnosis without requiring an internet connection. Diagnostic tools that do not require internet are critical for rural settings, especially in Africa where internet penetration is very low. An investigation was conducted in East Africa to evaluate the effectiveness of Nuru as a diagnostic tool by comparing the ability of Nuru, cassava experts (researchers trained on cassava pests and diseases), agricultural extension agents and farmers to correctly identify symptoms of cassava mosaic disease (CMD), cassava brown streak disease (CBSD) and the damage caused by cassava green mites (CGM). The diagnosis capability of Nuru and that of the assessed individuals was determined by inspecting cassava plants and by using the cassava symptom recognition assessment tool (CaSRAT) to score images of cassava leaves, based on the symptoms present. Nuru could diagnose symptoms of cassava diseases at a higher accuracy (65% in 2020) than the agricultural extension agents (40 - 58%) and farmers (18 - 31%). Nuru's accuracy in diagnosing cassava disease and pest symptoms, in the field, was enhanced significantly by increasing the number of leaves assessed to six (74 - 88%). Two weeks of Nuru practical use provided a slight increase in the diagnostic skill of extension workers, suggesting that a longer duration of field experience with Nuru might result in significant improvements. Overall, these findings suggest that Nuru can be an effective tool for in-field diagnosis of cassava diseases and has the potential to be a quick and cost-effective means of disseminating knowledge from researchers to agricultural extension agents and farmers, particularly on the identification of disease symptoms and their management practices. |
| ISSN | 1664462X |
| DOI | 10.3389/fpls.2020.590889 |
| Volume Number | 11 |
| Journal | Frontiers in Plant Science |
| Language | English |
| Publisher Date | 2020-12-18 |
| Access Restriction | Open |
| Subject Keyword | Tanzania Cassava mosaic disease (CMD) Cassava brown streak disease (CBSD) E-extension services Africa Kenya |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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